Dating old tools
In pre-industrial societies, throughout the world, most people worked as agricultural labourers.
In the best of cases, it is the last artisan who owned them who can give assurances as to their origin and date.
Do you know when your refrigerator was manufactured? Below you can discover the year of manufacture of some refrigerator brands produced for the American consumer market.
To discover the year, you must choose a brand from the pop-up list and enter the model and serial numbers of your refrigerator.
Sometimes only one method is possible, reducing the confidence researchers have in the results. “They’re based on ‘it’s that old because I say so,’ a popular approach by some of my older colleagues,” says Shea, laughing, “though I find I like it myself as I get more gray hair.” Kidding aside, dating a find is crucial for understanding its significance and relation to other fossils or artifacts.
Methods fall into one of two categories: relative or absolute.